add -p: demonstrate failure when running 'edit' after a split

The test passes if one replaces the 'e' command with a 'y' command in
the 'add -p' session.

Reported-by: Tanky Woo <[email protected]>
Signed-off-by: Matthieu Moy <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: moy

t/t3701-add-interactive.sh

@@ -332,6 +332,28 @@ test_expect_success 'split hunk "add -p (edit)"' '
 	! grep "^+15" actual
 '
 
+test_expect_failure 'split hunk "add -p (no, yes, edit)"' '
+	cat >test <<-\EOF &&
+	5
+	10
+	20
+	21
+	30
+	31
+	40
+	50
+	60
+	EOF
+	git reset &&
+	# test sequence is s(plit), n(o), y(es), e(dit)
+	# q n q q is there to make sure we exit at the end.
+	printf "%s\n" s n y e   q n q q |
+	EDITOR=: git add -p 2>error &&
+	test_must_be_empty error &&
+	git diff >actual &&
+	! grep "^+31" actual
+'
+
 test_expect_success 'patch mode ignores unmerged entries' '
 	git reset --hard &&
 	test_commit conflict &&